Exoslime, I wasn't being sarcastic with the Google Translate thing. It has a very nice preview feature, and English is, of course, well taken care of. Quickest, simplest way to check spelling/diction.
Personally I find the accents, particularly European, a unique part of the music. Early In Flames and Sybreed are a few of my favorites that have a certain ring to them that can't be matched. Eh, that's my two cents and it may or may not help.